'It is' or 'it has' is 'it's', 'it's', this is the 'ss' sound, not the 'zz' sound.

“It is”或“it has”的缩略形式是“it's”，这里发“ss”的音，而不是“zz”的音。

The SSs take the Jews into the woods and give them shovels so that they can dig their own graves.

党卫军将犹太人带到树林里，然后发铲子给他们，要他们挖掘自己的坟墓。

You and Godric were in the ss?

你和格瑞克曾经是纳粹党卫军吗？